Chuck Sox makes wooden boxes in which to ship motorcycles. Chuck and his three employees invest a total of 40 hours per day making the 120 boxes. a) What is their productivity? b) Chuck and his employees have discussed redesigning the pro- cess to improve efficiency. If they can increase the rate to 125 per day, what will be their new productivity? c) What will be their unit increase in productivity per hour? d) What will be their percentage change in productivity? P